:root {
  --bg: #f4f6f8;
  --surface: #ffffff;
  --text: #1c2733;
  --text-muted: #5b6b7a;
  --border: #dfe6ec;
  --accent: #0ea5a3;
  --accent-dark: #087f7d;
  --accent-contrast: #ffffff;
  --danger: #e0523e;
  --radius: 12px;
  --shadow: 0 2px 10px rgba(20, 35, 45, 0.08);
  --shadow-lg: 0 12px 32px rgba(20, 35, 45, 0.12);
  font-size: 16px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, Arial, sans-serif;
  line-height: 1.5;
}

a { color: var(--accent-dark); }

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.site-header .inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.25rem;
  text-decoration: none;
  color: var(--text);
}
.brand .mark {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
}
.site-header nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  margin-left: 4px;
}

main { max-width: 1100px; margin: 0 auto; padding: 32px 20px 80px; }

.hero { text-align: center; margin-bottom: 36px; }
.hero h1 { font-size: 2rem; margin-bottom: 8px; }
.hero p { color: var(--text-muted); max-width: 640px; margin: 0 auto; }

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 16px;
}
.tool-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-decoration: none;
  color: var(--text);
  box-shadow: var(--shadow);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.tool-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.tool-card .icon { font-size: 1.8rem; }
.tool-card h3 { margin: 0; font-size: 1.05rem; }
.tool-card p { margin: 0; color: var(--text-muted); font-size: 0.88rem; }

.tool-page-header { text-align: center; margin-bottom: 28px; }
.tool-page-header h1 { margin-bottom: 6px; }
.tool-page-header p { color: var(--text-muted); }

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  max-width: 720px;
  margin: 0 auto;
}

.dropzone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 40px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.dropzone.dragover { border-color: var(--accent); background: rgba(14, 165, 163, 0.06); }
.dropzone .big { font-size: 1.1rem; font-weight: 600; margin-bottom: 4px; }
.dropzone .small { color: var(--text-muted); font-size: 0.85rem; }
.dropzone input[type="file"] { display: none; }

.file-list { margin-top: 16px; display: flex; flex-direction: column; gap: 8px; }
.file-row {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 0.9rem;
}
.file-row img { width: 36px; height: 36px; object-fit: cover; border-radius: 6px; }
.file-row .name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-row .remove { cursor: pointer; color: var(--danger); font-weight: 700; border: none; background: none; }

.options { margin-top: 20px; display: flex; flex-direction: column; gap: 14px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 0.85rem; font-weight: 600; color: var(--text-muted); }
.field input[type="text"],
.field input[type="number"],
.field input[type="url"],
.field textarea,
.field select {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 9px 11px;
  font-size: 0.95rem;
  font-family: inherit;
  background: #fff;
  color: var(--text);
}
.field textarea { resize: vertical; min-height: 90px; }
.radio-group, .swatch-group { display: flex; flex-wrap: wrap; gap: 8px; }
.radio-group label {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.85rem;
  cursor: pointer;
  color: var(--text-muted);
}
.radio-group input { display: none; }
.radio-group input:checked + span { color: var(--accent-contrast); }
.radio-group label:has(input:checked) { background: var(--accent); border-color: var(--accent); color: #fff; }

.position-grid {
  display: grid;
  grid-template-columns: repeat(3, 32px);
  grid-template-rows: repeat(3, 32px);
  gap: 6px;
  width: fit-content;
}
.position-grid label {
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
}
.position-grid input { display: none; }
.position-grid label:has(input:checked) { background: var(--accent); border-color: var(--accent); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: 999px;
  padding: 12px 26px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  background: var(--accent);
  color: #fff;
  transition: background 0.15s ease, opacity 0.15s ease;
}
.btn:hover { background: var(--accent-dark); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }
.btn.full { width: 100%; margin-top: 18px; }
.btn.secondary { background: var(--surface); color: var(--text); border: 1px solid var(--border); }

.progress {
  margin-top: 16px;
  height: 8px;
  border-radius: 999px;
  background: var(--border);
  overflow: hidden;
  display: none;
}
.progress .bar { height: 100%; width: 0%; background: var(--accent); transition: width 0.15s ease; }

.result {
  margin-top: 20px;
  padding: 18px;
  border-radius: var(--radius);
  background: rgba(14, 165, 163, 0.08);
  border: 1px solid rgba(14, 165, 163, 0.3);
  text-align: center;
  display: none;
}
.result .expiry { margin-top: 10px; font-size: 0.85rem; color: var(--text-muted); }

.error-box {
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: 10px;
  background: rgba(224, 82, 62, 0.1);
  border: 1px solid rgba(224, 82, 62, 0.3);
  color: var(--danger);
  font-size: 0.9rem;
  display: none;
}

.crop-stage { margin-top: 16px; max-width: 100%; }
.crop-stage img { max-width: 100%; display: block; }

.privacy-note {
  margin-top: 40px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}
.privacy-note .badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 14px;
}

.site-footer {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  padding: 30px 20px;
}

@media (max-width: 640px) {
  .hero h1 { font-size: 1.5rem; }
  .panel { padding: 18px; }
}